Free Dave's Single Burger with Any Purchase at Wendy's Through the End of September

Wendy's is running a deal on their mobile app where you can get a free Dave's Single burger with any purchase through the end of September 2018.

The deal is refreshed everyday so you can use it quite a bit to eat on the cheap. The special appears as an offer in their mobile app so you'll need to download it and sign up for an account to take advantage of it (if you haven't already).

According to the chain, National Cheeseburger Day falls on September 18, 2018 but they want to prolong the celebration.

Photo via Wendy's.